Probe cover container identification

ABSTRACT

A temperature measurement system includes a temperature probe including a temperature sensor. The system also includes a reader, and a controller in communication with the temperature sensor and the reader. The system further includes a container housing a plurality of probe covers associated with the temperature probe. The container includes an information feature providing information related to the plurality of probe covers. The reader is configured to read the information and direct a signal to the controller indicative of the information.

FIELD OF THE INVENTION

The present disclosure relates to systems and methods for temperaturedetermination and, in particular, to systems and methods for determininga patient's core temperature.

BACKGROUND OF THE INVENTION

Measuring patient temperature is a common first step in diagnosingillnesses. Physicians commonly use a variety of methods for determiningpatient temperature including, for example, obtaining temperaturemeasurements with a thermometer. While thermometers utilizing mercuryhave been in existence for many years, modern thermometers typicallyemploy one or more electronic sensors configured to measure patienttemperature. Such sensors may take one or more measurements over arelatively short period of time. Based on these measurements, thethermometer may generate an estimated internal and/or core temperatureof the patient. In generating this estimated core temperature, it iscommon practice to insert at least a portion of the thermometer into acover prior to taking temperature measurements. The cover may overlaythe electronic temperature sensor of the thermometer, and may protectthe sensor from contamination during use.

Determining a patient's core temperature in this way may, however,produce inaccurate results. For example, due to the inherent variabilityin the processes used to manufacture such covers, each individual coverutilized with such thermometers often has a unique thickness,transmissivity, and/or other physical characteristics. Additionally,covers produced by different manufacturers may have different materialcompositions, dimensions, and/or other physical characteristics. Suchvariability can affect the temperature measurements taken bythermometers using such covers, and can be a significant source oferror. In an effort to minimize the effect of such error, modernthermometers may utilize algorithms that make predetermined estimates ofthe variations in the physical properties of such covers. Suchestimates, however, may introduce additional error into the patienttemperature determination, thereby reducing the accuracy of suchdeterminations.

The exemplary embodiments of the present disclosure are directed towardovercoming the deficiencies described above.

SUMMARY

In an exemplary embodiment of the present disclosure, a temperaturemeasurement system includes a temperature probe including a temperaturesensor. The system also includes a reader, and a controller incommunication with the temperature sensor and the reader. The systemfurther includes a container housing a plurality of probe coversassociated with the temperature probe. The container includes aninformation feature providing information related to the plurality ofprobe covers. The reader is configured to read the information anddirect a signal to the controller indicative of the information.

In an exemplary embodiment of the present disclosure, a method ofdetermining a temperature of a patient includes reading informationrelated to a plurality of probe covers stored within a container,mounting a probe cover of the plurality of probe covers onto atemperature probe while the probe cover is disposed substantially withinthe container, and measuring a temperature of the patient with atemperature sensor of the probe. The method also includes estimating acore temperature of the patient based on the measured temperature andthe information. In such a method, the information is read with a readerseparate from the temperature sensor.

In another exemplary embodiment of the present disclosure, a method ofdetermining a temperature of a patient includes accessing a top-mostprobe cover of a plurality of probe covers disposed within a container,and mounting the top-most probe cover onto a portion of a temperatureprobe, wherein the mounted top-most probe cover overlays a temperaturesensor of the temperature probe. Such a method also includes readinginformation indicative of the plurality of probe covers with a reader incommunication with the temperature probe, wherein the information isread from the container. Such a method further includes measuring atemperature of the patient with a temperature sensor of the temperatureprobe, and estimating a core temperature of the patient based on themeasured temperature and the information.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a temperature probe according to an exemplaryembodiment of the present disclosure.

FIG. 2 illustrates a portion of a temperature measurement systemaccording to an exemplary embodiment of the present disclosure.

FIG. 3 is a cut away pictorial view of an exemplary storage container ofthe present disclosure.

FIG. 4 illustrates a portion of a temperature measurement systemaccording to another exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION

FIG. 1 illustrates an exemplary temperature probe 10 of the presentdisclosure. The temperature probe 10 may include, for example, a head 18connected to a handle 20. The head 18 may define a distal end 12 of thetemperature probe 10, and the handle 20 may define a proximal end 14 ofthe probe 10. The head 18 may include an atraumatic tip 16 disposed atthe distal end 12. The tip 16 may be sufficiently rounded and/orotherwise configured so as not to cause injury to a patient upon contactwith a body surface or at least partial insertion of the head 18 withinone or more body cavities of the patient. In an exemplary embodiment inwhich the temperature probe 10 is utilized to measure, calculate,estimate and/or otherwise determine a core temperature of the patient,it is understood that such body cavities may include the ear, mouth,rectum, underarm, and/or other known body cavities from which it isconvenient to sense temperature. It is understood that theimplementation of the disclosed technology in a temperature probe 10 ismerely exemplary. The disclosed technology may be applicable to anyother medical device that may use a cover, sheath, and/or otherstructure to protect the device from contaminants present on a surfaceor in a cavity of the body. Such medical devices may include, forexample, probes, endoscopes, speculums, and/or other like devices wherethe characteristics of the cover/sheath impact the accuracy or precisionof data gathered or measurements taken by the medical device.

The head 18 and/or the handle 20 may be made from any material and/orcombinations of materials commonly used in medical and/or examinationprocedures. Such materials may include, for example, plastics, polymers,composites, stainless steel, and/or any other like materials. Suchmaterials may be suitable for repeated use and/or repeated sanitation.Accordingly, in an exemplary embodiment of the present disclosure, thetemperature probe 10 and/or its components may be substantiallywaterproof. One or more waterproof seals may be included and/orotherwise utilized with components of the probe 10 to facilitate suchrepeated sanitation and/or use.

The handle 20 may include one or more operator interfaces 22. Suchoperator interfaces 22 may be configured to assist in performing one ormore functions of the temperature probe 10. For example, the operatorinterfaces 22 may comprise any combination of switches, buttons, levers,knobs, dials, keys, and/or other like components configured to activate,deactivate, manipulate, and/or otherwise control components of thetemperature probe 10. Such operator interfaces 22 may, for example,assist the user in toggling through and/or selecting one or more modesof operation of the temperature probe 10, enabling and/or disabling oneor more alarms or signals associated with operation of the probe 10,initiating a single substantially instantaneous temperature calculation,initiating a substantially continuous and/or repeating temperaturecalculation, and/or other like modes, functions, or operations.

In an exemplary embodiment, at least one of the operator interfaces 22may be operably connected to an ejector mechanism 26 disposed proximatea base 24 of the head 18. At least a portion of the temperature probe 10may be inserted into a probe cover 30 before and/or during use, and suchan ejector mechanism 26 may be configured to assist in removing theprobe cover 30 from the temperature probe 10. For example, the ejectormechanism 26 may comprise one or more fingers, hooks, shoulders, arms,tabs, and/or other like structures configured to assist in ejecting theprobe cover 30 from the base 24 of the head 18 after use. In anexemplary embodiment, one or more such ejector mechanisms 26 may bemovable with respect to the base 24 and/or the head 18. In suchexemplary embodiments, the ejector mechanisms 26 may be movable in, forexample, a path substantially parallel to an axis of the head 18. Inadditional exemplary embodiments, the ejector mechanisms 26 may bemovable in an arcuate path relative to the head 18. Movement of theejector mechanisms 26 may assist in bending, flexing, and/or otherwisedeforming at least a portion of the probe cover 30. For example, theejector mechanisms 26 may be movable along one or more surfaces of theprobe cover 30, and such movement may assist in flexing at least aportion of the probe cover 30. Such flexing may ultimately overcome aretention force provided by one or more retention components (not shown)of the temperature probe 10 and/or the probe cover 30, thereby releasingthe probe cover 30 from the temperature probe 10.

In additional exemplary embodiments, one or more operator interfaces 22may be configured to assist in controlling one or more correspondingsensors associated with the temperature probe 10. For example, theoperator interfaces 22 may be operably connected to and/or otherwise incommunication with first and second sensors 32, 34. In exemplaryembodiments, the first and second sensors 32, 34 may be embedded withinand/or otherwise formed integrally with the head 18 and/or the handle20. In such exemplary embodiments, it is understood that the sensors 32,34 may be electrically, operably, and/or otherwise connected to theoperator interfaces 22 and/or other components of the temperature probe10 via known electrical or wireless connections. As will be described ingreater detail below, the sensors 32, 34 may be operably, controllably,electrically, wirelessly, and/or otherwise connected to and/or incommunication with a controller 52. In such an exemplary embodiment, thecontroller 52 may be configured to assist in estimating a coretemperature of a patient based on signals and/or other input from thefirst and second sensors 32, 34. In further exemplary embodiments, oneor more of the sensors 32, 34 may be in communication with thetemperature probe 10 and/or the controller 52 via WiFi, Bluetooth,and/or any other known wireless connection.

In an exemplary embodiment, one or more of the sensors 32, 34 maycomprise any type of temperature sensor known in the art. For example,the sensors 32, 34 may be the same type of sensor. Alternatively, thesensors 32, 34 may comprise different types of sensors configured tosense one or more different characteristics of a patient. In anexemplary embodiment, at least one of the first and second sensors 32,34 may comprise a temperature sensor, such as a thermocouple and/or athermistor, configured to sense a temperature associated with thepatient. For example, such a sensor may be configured to sense atemperature of the body cavity into which the temperature probe 10 hasbeen inserted. For example, in embodiments in which the head 18 of thetemperature probe 10 is inserted into the ear of the patient, such asensor may be utilized to sense a temperature associated with thetympanic membrane of the patient.

In an additional exemplary embodiment, at least one of the sensors 32,34 may comprise an infrared temperature sensor such as, for example, athermopile and/or other like infrared-based temperature sensingcomponents. Such a sensor may be configured to convert thermal energyinto electrical energy, and may comprise two or more thermocouplesconnected in series or in parallel. Such components may be configured togenerate an output voltage proportional to a local temperaturedifference and/or temperature gradient. In an exemplary embodiment inwhich the one or more of the sensors 32, 34 comprises a thermopile, thetemperature probe 10 may comprise, for example, an infrared temperatureprobe and/or other like infrared thermometer.

In another exemplary embodiment, at least one of the sensors 32, 34 maycomprise a reader such as, for example, an RFID reader, a barcodereader, an MICR reader, a conductance sensor, a resistance sensor, amagnetic sensor, and/or any other like reading device known in the art.Such a reader may be configured to sense, scan, detect, and/or otherwiseread information carried by one or more information features 28associated with the storage container 58. In addition to standard text,such information features 28 may comprise one of an RFID tag, a barcode,MICR printing, a conductive, resistive, and/or magnetic strip ofmaterial, and/or other known means for providing information. The readermay further comprise one or more cameras, scopes, optical devices,and/or other like components configured to read information from theinformation feature 28. In such exemplary embodiments, the reader and/orthe controller 52 may employ various pattern recognition software,identification software, and/or other like control hardware/software toassist in reading the information provided by the information feature28. As shown in FIG. 1, in an exemplary embodiment the reader 34 may bedisposed on the temperature probe 10 and/or formed integrally with thetemperature probe 10 proximal to the temperature sensor 36.

As shown in FIG. 4, in further exemplary embodiments, the temperaturemeasurement system 100 may include a receptacle 80 configured to retainat least one of the storage container 58 and the temperature probe 10.For example, the receptacle 80 may include a first compartment 82 sized,shaped, and/or otherwise configured to retain and/or store at least aportion of the temperature probe 10 therein. The receptacle 80 may alsoinclude a second compartment 84 sized, shaped, and/or otherwiseconfigured to retain and/or store at least a portion of the storagecontainer 58 therein. Alternatively, the temperature probe 10 and thestorage container 58 may be retained and/or stored within a singlecompartment of the receptacle 80. The compartments of the receptacle 80may include, for example, one or more openings configured to facilitaterepeated insertion and/or removal of the temperature probe 10 and thestorage container 58, respectively.

In an exemplary embodiment, the sensor 34 may be disposed on thereceptacle 80 at any location convenient for reading information fromthe information feature 28 when the information feature 28 is disposedproximate the sensor 34. For example, the sensor 34 may be disposed onor in one of the compartments 82, 84. In such exemplary embodiments, thesensor 34 may be positioned to read information from the informationfeature 28 during at least one of insertion of the storage container 58into the receptacle 80 and removal of the temperature probe 10 from thereceptacle 80. In exemplary embodiments in which the sensor 34 isdisposed within the second compartment 84, the information feature 28may be disposed substantially adjacent to the sensor 34 and/or at leastpartially within a sensing range 74 (described in greater detail belowwith respect to FIG. 2) of the sensor 34 when the storage container 58is disposed within the second compartment 84.

Likewise, in exemplary embodiments in which the sensor 34 is disposedwithin the first compartment 82, the information feature 28 may bedisposed proximate the sensor 34 and/or at least partially within thesensing range 74 of the sensor 34 when the storage container 58 isdisposed within the second compartment 84. In such an additionalexemplary embodiment, a portion of the first and/or second compartment82, 84 may be removed to facilitate reading of the information by thesensor 34. Alternatively, at least one of the first and secondcompartments 82, 84 may include a substantially transparent window (notshown), lens, or other like optical component (described in greaterdetail below) to facilitate reading of the information by the sensor 34disposed in the first compartment 82.

In such exemplary embodiments, the sensor 34, temperature probe 10,receptacle 80, and/or the controller 52 may include and/or be incommunication with a proximity sensor (not shown). Such a proximitysensor may detect insertion of the storage container 58 into thereceptacle 80 and/or removal of the storage container 58 from thereceptacle 80. Such a proximity sensor may also detect insertion of thetemperature probe 10 into the receptacle 80 and/or removal of thestorage container 58 from the receptacle 80. The proximity sensor may beconfigured to direct a signal to the controller 52 indicative of suchinsertion and/or removal, and the sensor 34 may be configured to readinformation from the information feature 28 in response to such a signaland/or in response to a related command signal received from thecontroller 52. In the exemplary embodiment illustrated in FIG. 4, thesensor 34 may be configured to read the information from the informationfeature 28 prior to and/or during each temperature measurement performedby the sensor 36.

In exemplary embodiments, the sensor 34 may be configured to read theinformation and direct a signal to the controller 52 indicative of theinformation. The controller 52 may utilize the received information forany number of known functions. For example, the controller 52 may beconfigured to estimate a core temperature of the patient based on theinformation. The controller 52 may also be configured to deactivate thetemperature probe 10, and/or components thereof, in response to theinformation. For example, the controller 52 may be configured todeactivate one or both of the sensors 32, 34 in response to theinformation. Such control strategies will be discussed in greater detailbelow.

In a further embodiment, an exemplary infrared temperature probe 10 mayutilize at least a portion of the thermal radiation emitted by thepatient and/or the body cavity of the patient into which the temperatureprobe 10 has been inserted in order to estimate, infer, calculate,and/or otherwise determine a core temperature of the patient. Such anexemplary temperature probe 10 may utilize signals received by at leastone of the first and second sensors 32, 34 to determine an amount ofinfrared radiation emitted by the patient. Using a known transmissivityand/or other characteristic of the patient, such infrared temperatureprobes 10 may be capable of estimating a core temperature of thepatient.

At least one of the sensors 32, 34 may additionally include at least onewindow, lens, and/or other like optical component 36 positionedproximate thereto. For example, such an optical component 36 may bedisposed substantially flush and/or coplanar with the outer surface ofthe head 18. Such optical components 36 may be disposed, for example, atthe tip 16 of the temperature probe 10, and may be configured to assistin, for example, focusing and/or transmitting infrared radiation betweenthe thermopile and the body cavity of the patient. Such opticalcomponents 36 may also assist in protecting the thermopile,thermocouple, thermistor, and/or other sensor components during use ofthe temperature probe 10, and may assist in forming a substantiallyfluid tight compartment within the head 18 so as to protect sensorcomponents from contact with bodily fluids, cleaning solutions, and/orother liquids. It is understood that such optical components 36 may besubstantially transparent to assist in the transmission of infraredand/or other types of radiation.

The handle 20 may also include one or more displays 54 operablyconnected to the controller 52. The display 54 may comprise, forexample, a liquid crystal display (LCD) screen, a light emitting diode(LED) display, a digital read-out, and/or any other like componentsconfigured to communicate information to the user of the temperatureprobe 10. Such displays 54 may be configured to indicate, for example,one or more temperatures sensed by the sensor 32, information read bythe sensor 34, one or more temperatures calculated based on signalsreceived from the one or more sensors 32, 34, and/or any otherinformation that may be useful during operation of the temperature probe10.

The display 54 may be configured to communicate such informationsubstantially instantaneously and/or substantially continuouslydepending on the mode of operation of the temperature probe 10. Such adisplay 54 may also indicate whether or not the temperature probe 10 isturned on, and whether a probe cover 30 has been connected to thetemperature probe 10. The display 54 may also be configured to indicatethe mode of operation of the temperature probe 10 (for example,continuous or instantaneous modes of temperature calculation), as wellas whether one or more threshold temperatures, threshold temperaturechange rates, and/or other sensed metric thresholds have been met orexceeded. The display 54 may be, for example, a substantially numericaldigital display, and may also be configured to display any other typicaloperating information such as, for example a temperature vs. time trendline or other graphical depictions.

The temperature probe 10 may also include one or more signal devices(not shown) operably connected to the controller 52. Such signal devicesmay include, for example, one or more lights, LEDs, speakers, and/orother like devices configured to emit an audible and/or optical alarm orsignal in response to a command or signal from the controller 52. Suchan alarm or other signal may be initiated by, for example, thecontroller 52 when the calculated temperature meets or exceeds athreshold temperature. In additional exemplary embodiments, such analarm or signal may be initiated during a substantially continuoustemperature calculation operation where the rate of patient temperaturechange meets or exceeds a predetermined temperature change ratethreshold.

The controller 52 may be operably connected to and/or otherwise incommunication with the operator interfaces 22, display 54, sensors 32,34, and/or other components of the temperature probe 10, and thecontroller 52 may be configured to control the operation of suchcomponents. In an exemplary embodiment, the controller 52 may beconfigured to receive signals, information, measurements, and/or otherdata from the first and second sensors 32, 34, and to calculate anestimated core temperature of the patient based on the informationreceived. The controller 52 may also be configured to execute one ormore commands and/or control programs. For example, the controller 52may be programmed to initiate one or more alarms in response tocalculating a patient temperature that is greater than or equal to apredetermined threshold temperature. In an exemplary embodiment, such athreshold temperature may be approximately 100° F. In addition, thecontroller 52 may be configured to initiate such an alarm during asubstantially continuous temperature calculation operation if thecalculated temperature increases and/or decreases at a rate that isgreater than or equal to a predetermined threshold temperature changerate.

The controller 52 may comprise a processor, memory, and/or other knowncontroller components to facilitate the functionality described herein.In an exemplary embodiment, the controller 52 may be disposed within,for example, the handle 20 of the temperature probe 10. In such anembodiment, the handle 20 may form one or more substantially water-tightand/or substantially hermetically sealed compartments for storing thevarious components of the controller 52.

The probe cover 30 may be substantially conical, substantiallycylindrical, and/or any other convenient shape for sensing thetemperature of a patient, and the probe cover 30 may have similardimensions to that of the head 18. For example, the probe cover 30 maybe incrementally longer than the head 18 so as to fit over substantiallythe entire head 18. When mounted on the head 18, the probe cover 30 mayoverlay the sensor 32 disposed at the tip 16, however, the sensor 34 maybe disposed proximal to the mounted probe cover 30. The probe cover 30may define an orifice 46 at a proximal end 42 thereof. Similar to thehead 18, the probe cover 30 may also define a substantially atraumatictip at a distal end 40 thereof. The probe cover 30 may be formed fromany medically approved material known in the art. Such materials mayinclude, for example, plastics, polymers, and/or any of the othermaterials discussed above with regard to the temperature probe 10. Usingsuch materials may enable, for example, the probe cover 30 to berepeatedly used and/or sanitized.

Such materials may also facilitate formation of the probe cover 30through any molding, extrusion, and/or other like process known in theart. Such materials and/or processes may enable the probe cover 30 to beformed with any desirable transmissivity, thickness, dimensions, and/orother configurations. For example, multiple probe covers 30 of thepresent disclosure may be formed at the same time though the processesdiscussed above, and each batch or lot of probe covers 30 may be formedwith substantially the same transmissivity, thickness, dimensions,and/or other configurations. Although it may be desirable for the probecovers 30 formed in each lot to have identical configurations, suchrepeatability within the lot may not be possible due to variationsand/or imperfections inherent in the above manufacturing processes.Accordingly, the transmissivity, thickness, dimensions, and/or otherconfigurations of the probe covers 30 in each lot may be substantiallyidentical within a desired tolerance range.

In additional exemplary embodiments, the probe cover 30 may include oneor more additional structures to facilitate usage with, insertion on,and/or removal from the temperature probe 10. For example, while theorifice 46 may be shaped, sized, and/or otherwise configured to acceptthe head 18 and to mate with one or more ejector mechanisms 26 of thetemperature probe 10, in further exemplary embodiments, at least aportion of the proximal end 42 of the probe cover 30 may includeadditional notches, cutouts, tabs, ribs, flanges, and/or other retentioncomponents configured to assist in connecting the probe cover 30 toand/or disconnecting the probe cover 30 from the temperature probe 10.For example, such retention components may mate with the ejectormechanisms 26 of the temperature probe 10 to facilitate retention of theprobe cover 30 on the head 18 and/or ejection of the probe cover 30 fromthe head 18. Once the probe cover 30 has been connected to thetemperature probe 10, such retention components may assist in providinga retention force sufficient to maintain the connection between theprobe cover 30 and the temperature probe 10. An exemplary retentionforce may be a compression force applied by, for example, a rib of theprobe cover 30 to one or more tabs proximate the base 24 of the head 18.

Such retention components of the probe cover 30 may also include, forexample, one or more camming surfaces positioned such that the ejectormechanism 26 is able to ride along the one or more camming surfaces insubstantially the direction of arrow 50. Such movement of the ejectormechanism 26 may assist in bending and/or otherwise flexing a portion ofthe probe cover 30. The force applied by the ejector mechanism 26 to theone or more camming surfaces of the probe cover 30 may be sufficient toovercome the retention force provided by the retention components, andas a result, the probe cover 30 may be ejected from the head 18.

As shown in FIGS. 2 and 4, and as mentioned above, an exemplarytemperature measurement system 100 of the present disclosure may includea storage container 58 and one or more probe covers 30 disposed withinthe storage container 58. Such exemplary temperature measurement systems100 may also include the receptacle, 80, the temperature probe 10,and/or any components thereof. The storage container 58 may have anyshape, size, and/or other configuration convenient for storing aplurality of probe covers 30 therein. For example, the storage container58 may be substantially box shaped, and may have a substantiallyrectangular, substantially cylindrical, substantially square, and/orsubstantially hexagonal cross-sectional shape.

At least a portion of the storage container 58 may define one or moreopenings 60. Such exemplary openings 60 may be shaped, sized, located,and/or otherwise configured to assist in the removal of one or moreprobe covers 30 from the storage container 58. For example, such anopening 60 may be shaped and/or sized to permit passage of a probe cover30 for removal of the probe cover 30 from the storage container 58. Suchan opening 60 may also be shaped and/or sized to permit removal of onlya single probe cover 30 from the storage container 58 at one time. Insuch an exemplary embodiment, the opening 60 may assist in retaining theremaining probe covers 30 within the storage container 58 while, at thesame time, facilitating removal of a single probe cover 30 for use withthe temperature probe 10. For example, two or more probe covers 30 maybe stacked on top of one another within the storage container 58. Anexemplary stacked arrangement is illustrated in FIG. 3. In such anarrangement, at least a portion of a top-most probe cover 30 a may bedisposed within an adjacent probe cover 30 b. In such an embodiment, theopening 60 of the storage container 58 may facilitate removal of thetop-most probe cover 30 a. while assisting in retaining the adjacentprobe cover 30 b within the storage container 58. In an exemplaryembodiment, the storage container 58 may further include one or moretabs, shoulders, and/or other like features (not shown) extending fromone or more surfaces of the storage container 58 to assist in retainingthe adjacent probe cover 30 b during removal of the top-most probe cover30 a.

As shown in FIG. 2, the storage container 58 may, for example, define afront 66, a back 68, and at least two sides 70, 72. In additionalexemplary embodiments, the storage container 58 may include additionalsides and/or other structures depending upon, for example, theconfiguration of the probe covers 30 and/or storage requirements relatedto the probe covers 30. As shown in FIG. 2, an exemplary storagecontainer 58 may also include a top 62, and a bottom 64 disposedopposite the top 62. In an exemplary embodiment, the top 62 may defineat least a portion of the opening 60. In additional exemplaryembodiments, at least a portion of the top 62 may be removed to exposethe opening 60, and in further exemplary embodiments, substantially theentire top 62 may be removed from the storage container 58.Alternatively, and/or in addition, one or more of the front 66, back 68,and sides 70, 72, or a portion thereof, may be folded and/or removed toexpose the opening 60.

As shown in FIG. 3, two or more stacked probe covers 30 a, 30 b may besubstantially aligned along respective longitudinal axes thereof withinthe storage container 58. In such exemplary embodiments, a plurality ofprobe covers 30 may be supported by, for example, the bottom 64 of thestorage container 58. For example, the distal end 40 of a bottom-mostprobe cover 30 j may be disposed in contact with the bottom 64, andadjacent probe covers 30 may be stacked on top of one another such thata rib, tab, flange, or other structure of the top-most probe cover 30 alies in contact with a corresponding structure of the adjacent probecover 30 b.

The storage container 58 may include one or more information features 28configured to provide information to the sensor 34. In an exemplaryembodiment in which the sensor 34 comprises a reader, the sensor 34 maybe configured to read information from the information feature 28, andsend a signal to the controller 54 indicative of the information. Forexample, as shown in FIG. 2, the reader may pass proximate to to theinformation feature 28 to read the information while the head 18 and/orother portion of the temperature probe 10 passes through the opening 60.Alternatively, as shown in FIG. 4, in exemplary embodiments in which thereader is disposed on the receptacle 80, the information feature 28 maypass proximate to the reader during insertion in and/or removal from thereceptacle 80. In such an exemplary embodiment, the reader may read theinformation during at least one of, for example, insertion of thestorage container 58 into the receptacle 80 and removal of thetemperature probe 10 from the receptacle 80.

The information feature 28 may provide any relevant information relatedto the probe covers 30, the temperature probe 10, and/or the storagecontainer 58. For example, the information may comprise thickness,transmissivity, material composition, manufacture date, lot number,manufacture location, manufacturer name, probe cover type, intended bodysite, and/or other information associated with each individual probecover 30 disposed within the storage container 58. In another exemplaryembodiment, the information may comprise, an average thickness, anaverage transmissivity, and/or other average values corresponding to theplurality of probe covers 30 stored within the storage container 58. Instill a further exemplary embodiment, the information may compriseaverage thickness, average transmissivity, material composition,manufacture date, lot number, manufacture location, probe cover type,intended body site, and/or other information corresponding to the lot ofprobe covers from which the plurality of probe cover 30 disposed withinthe storage container 58 have been obtained. Such exemplary informationmay also include a range of tolerances corresponding to each value.

The information feature 28 may be positioned at any desirable locationon the storage container 58 to facilitate reading of the information bythe sensor 34. For example, the information feature 28 may be positionedon the front 66, back 68, one of the sides 70, 72, and/or any othersurface of the storage container 58. The information feature 28 may bedisposed proximate the opening 60 such that the sensor 34 may readinformation provided by the information feature 58 as the head 18 of thetemperature probe 10 is passed through the opening 60 for mounting aprobe cover 30 thereon. Alternatively, as shown in FIG. 4, theinformation feature 28 may be appropriately located and/or positioned ona surface of the storage container 58 such that the information feature28 will be disposed proximate and/or substantially adjacent to thesensor 34 when the storage container 58 is disposed within thereceptacle 80.

The information feature 28 may comprise, for example, a label, tag,patch, and/or any other like structure attached to the storage container58 during the manufacturing process. In such embodiments, theinformation feature 28 may be attached to the storage container 58 withadhesives and/or any other like means. Alternatively, the informationfeature 58 may be printed directly onto the storage container 58 and/orotherwise formed integrally with the storage container 58. As describedabove, in exemplary embodiments, the information feature 28 may compriseone or more of an RFID tag, a barcode, MICR printing, a conductive,resistive, and/or magnetic piece of material, and/or any other likedevice useful in providing information readable by the sensor 34.

In still further exemplary embodiments, an information feature 28 may bedisposed on a surface of each individual probe cover 30. In suchexemplary embodiments, the information feature 28 may be etched, molded,and/or otherwise formed integrally with the probe cover 30 during theprobe cover manufacturing process. Alternatively, such informationfeatures 28 may be adhered, printed, and/or otherwise disposed on eachprobe cover 30 by other known means or methods. In such exemplaryembodiments, the sensor 34 may be disposed at any convenient location onthe temperature probe 10 to facilitate reading of the information. Forexample, in such embodiments, the sensor 34 may be disposed on, in,and/or proximate the head 18. In further exemplary embodiments, thesensor 34 may be disposed proximate the tip 16 to facilitate reading theinformation.

The temperature probes 10, probe covers 30, receptacles 80, and storagecontainers 58 described herein may be utilized by physicians, nurses,and/or other health care professionals in a variety of differentenvironments. For example, the devices and/or the temperaturemeasurement systems described herein may be employed in any of a numberof examination facilities to determine one or more temperaturesassociated with a patient such as, for example, an estimated coretemperature of the patient. Such an estimated core temperature may beutilized by the health care professional to assist in treating thepatient, and may have a variety of uses that are well known in themedical field.

In order to determine a patient temperature according to an exemplaryembodiment of the present disclosure, a user of the temperature probe 10may insert the temperature probe 10 into a probe cover 30. For example,the user may insert at least a portion of the temperature probe 30 suchas, for example, the head 18 into the probe cover 30, via the orifice46. In an exemplary embodiment, the probe cover 30 may be disposedwithin the storage container 58 while the head 18 of the temperatureprobe 10 is inserted into the probe cover 30. In such an exemplaryembodiment, the probe cover 30 may be accessed through the opening 60 ofthe storage container 58 for insertion of the head 18. As shown in FIG.3, the temperature probe 10 may be moved in the direction of arrow 50relative to the probe cover 30 for insertion.

As one or more of the ejector mechanisms 26 come into contact with theprobe cover 30, one or more such ejector mechanisms 26 may hook, clip,and/or otherwise mate with the proximal end 42 of the probe cover 30 toassist in retaining the probe cover 30 on the head 18. In exemplaryembodiments in which the proximal end 42 of the probe cover 30 definesone or more of the notches, cutouts, and/or other retention componentsdescribed above configured to mate with such ejector mechanisms 26,these components may communicate with the corresponding ejectormechanisms 26 of the temperature probe 10 to assist in retaining theprobe cover 30 thereon.

Once the probe cover 30 has been connected to the temperature probe 10,one or more of the sensors 32, 34 may be activated and/or otherwisecontrolled to begin sensing. For example, connecting the probe cover 30to the temperature probe 10 may activate the sensor 34 to begin sensingand/or otherwise reading information positioned within a sensing range74 of the sensor 34. The sensing range 74 of the sensor 34 may be anarea or zone within which the sensor 34 may be capable of readinginformation. Such a sensing range 74 may be widened and/or narrowed byadjusting the sensor 34 and/or a lens or other optical componentassociated with the sensor 34 or the receptacle 80. In an exemplaryembodiment, such a sensing range 74 may be substantially conical, andmay extend transverse from the sensor 34 for approximately one to twofeet. Objects within the sensing range 74 of the sensor 34 may be readby the sensor 34 while objects disposed outside of the sensing range 74may not be read. In an exemplary embodiment, at least a portion of thestorage container 58 and its components may be disposed within thesensing range 74 of the sensor 34 as the head 18 is placed in contactwith the top-most probe cover 30 a for mounting. Accordingly, connectinga probe cover 30 to the temperature probe 10 may activate the sensor 34,and the sensor 34 may read information provided by the informationfeature 28 substantially simultaneously with connection of the probecover 30. In exemplary embodiments, the information feature 28 may bepositioned at a location on the storage container 58 that is within thesensing range 74 of the sensor 34, but outside of an analogous sensingrange (not shown) of the sensor 32, while the head 18 and/or otherportion of the temperature probe 10 is inserted within the probe cover30.

As described above with respect to FIG. 4, in still further exemplaryembodiments, at least a portion of the storage container 58 and itscomponents may be disposed within the sensing range 74 of the sensor 34upon insertion of the storage container 58 within the receptacle 80.Accordingly, inserting the storage container 58 into the receptacle 80,and/or connecting a probe cover 30 to the temperature probe 10 while thestorage container 58 is disposed within the receptacle 80 may activatethe sensor 34. In such an exemplary embodiment, the sensor 34 may readinformation provided by the information feature 28 substantiallysimultaneously with insertion of the storage container 58 within thereceptacle 80 and/or with connection of the probe cover 30. As describedabove, one or more proximity sensors associated with the sensor 34, thetemperature probe 10, the receptacle 80, and/or the controller 52 maytrigger reading of the information by the sensor 34.

Upon reading the information provided by the information feature 58, thesensor 34 may send one or more signals to the controller 52 indicativeof the information. The controller 52 may process the signals, and maycontrol operation of the temperature probe 10 in response to theinformation read by the sensor 34. For example, the controller 52 mayidentify the storage container 58 and/or the probe covers 30 storedtherein, based on the information. The controller 52 may activate thesensor 32 in response to such identification if the storage container 58and/or its probe covers 30 are identified as being products of anacceptable manufacturer. Such a manufacturer may be, for example, thesame manufacturer as the temperature probe 10 or an approved licensee ofthe temperature probe manufacturer. A list of such acceptablemanufacturers may be stored within a memory of the controller 52, andthe controller 52 may determine whether the storage container 58 and/orthe probe covers 30 are products of an acceptable manufacturer bycomparing the information read by the sensor 34 to the list. Inaddition, the controller 52 may disable the temperature probe 10 and/orone or more of its components in response to the information. Forexample, the controller 52 may disable the temperature probe 10 if noinformation is read in conjunction with mounting a probe cover 30 on thehead 18, or in response to determining that the probe cover 30 mountedon the head 18 is not a product of an acceptable manufacturer.

In additional exemplary embodiments, the controller 52 may record and/orotherwise store information read by the sensor 34. For example, thecontroller 52 may identify the storage container 58 as containing probecovers 30 produced by an acceptable manufacturer, and may record acumulative number of probe covers 30 used from the identified storagecontainer 58. In this way, the controller 52 may keep a running tally ofthe number of probe covers 30 withdrawn from the storage container 58.The controller 52 may disable the temperature probe 10 for subsequenttemperature measurements utilizing probe covers 30 from the identifiedstorage container 58 in response to the cumulative number of probecovers 30 meeting a probe cover capacity associated with the storagecontainer 58. In such exemplary embodiments, the controller 52 mayprohibit use of probe covers 30 disposed within a storage container 58of an acceptable manufacturer, but that may not have been produced bythe acceptable manufacturer. Instead, once the cumulative number ofprobe covers 30 associated with the identified storage container 58meets the probe cover capacity of the storage container 58, thecontroller 52 may prohibit use of additional probe covers 30 stored inand/or otherwise associated with the identified storage container 58.

In further exemplary embodiments, information collected regarding thenumber of probe covers 30 used may be used to manage inventory levels.For example, the cumulative number of probe covers 30 described abovemay be used to manage inventory levels within an organization such as ahospital, a physician's office, a clinic, and/or any other healthcarefacility. In such embodiments, one or more temperature probes 10 and/ortheir respective controllers 52 may be in communication with a server, awireless network, and/or other like devices at the healthcare facility.The one or more temperature probes 10 may continuously update thefacility device with the cumulative number of probe covers 30 used. Theserver and/or other facility device may, in turn, keep a running tallyof the total number of probe covers 30 used by the temperature probes 10throughout the facility. When the tally of the total number of probecovers 30 used reaches an inventory threshold, the facility device mayalert a facility employee that additional probe covers 30 should beordered to replenish the facility's inventory. Alternatively, thefacility device may automatically place an order for such additionalprobe covers in response to the threshold being reached.

In addition, as described above, each of the probe covers 30 disposedwithin the storage container 58 may be characterized by at least oneunique thickness, transmissivity, and/or other physical property value.In exemplary embodiments, the information provided by the informationfeature 28 may comprise averages of each respective unique propertyvalue associated with the probe covers 30 disposed within the storagecontainer 58, or with the lot of probe covers from which the probecovers 30 disposed within the storage container 58 were obtained. Insuch exemplary embodiments, a core temperature of a patient may beestimated and/or otherwise calculated based on the information. Inparticular, as will be described in greater detail below, theinformation may be utilized as an input to one or more temperaturecalculation algorithms employed by the controller 52 to estimate a coretemperature of the patient.

Once the probe cover 30 has been mounted onto the head 18 of thetemperature probe 10, the head 18 and the probe cover 30 may be removedfrom the storage container 58 in the direction of arrow 76 (FIG. 2), andmay be inserted into a body cavity of a patient to facilitatedetermining an estimated core temperature of the patient. For example,while within the body cavity, the sensor 32 may sense a temperatureindicative of a temperature of the body cavity. For example, in anembodiment in which the first sensor 32 comprises a thermocouple and/ora thermistor, the first sensor 32 may be utilized to measure thetemperature of the body cavity.

Signals indicative of the measured temperature may be sent to thecontroller 52 by the sensor 32, and the controller 52 may assist inestimating the core temperature based on the sensed temperature and theinformation read from the information feature 28. For example, theaverage thickness, average transmissivity, and/or other physicalproperty values of the probe covers 30 contained within the storagecontainer 58, or their corresponding lot, may be utilized in the coretemperature calculation to reduce error. Such error is commonly causedby mistakenly assuming that the probe cover 30 being utilized hasthickness, transmissivity, and/or other physical property valuessubstantially equal to nominal or requested physical property valuesassociated with the manufacturing process when, in fact, the actualthickness, transmissivity, and/or other physical property values of theprobe cover 30 may be substantially different than such nominal values.Such differences may result from, for example, variations inherent inthe manufacturing process.

For example, if the actual probe cover 30 being used during the bodycavity temperature measurement has a greater thickness and/or a lowertransmissivity than the nominal thickness and/or transmissivity valuesrequested from the probe cover manufacturer, the temperature measurementobtained by the sensor 32 may be artificially lower than the actualtemperature of the body cavity. Accordingly, an exemplary algorithm ofthe present disclosure may incorporate the information read from theinformation feature 28 into the core temperature calculation to reduceerror resulting from probe cover manufacturing variations. In the aboveexample, the algorithm may increase the estimated core temperature inresponse to the thickness and/or transmissivity information. Inadditional exemplary embodiments, on the other hand, the algorithm maydecrease the estimated core temperature as necessary based on theinformation provided by the information feature 28. Once the estimatedcore temperature of the patient has been calculated by the controller52, the display 54 may communicate the temperature to a user of thetemperature probe 10.

Additional exemplary embodiments of the present disclosure may employfurther techniques to assist in reducing the error associated withcalculating the core temperature of the patient. For example, one suchmethod of core temperature determination may include heating at least aportion of the temperature probe 10 to a known temperature, andcalculating the core temperature based on the sensed temperaturedescribed above, the information provided by the information feature 28,as well as the known temperature. In exemplary embodiments, the knowntemperature to which a portion of the temperature probe 10 may be heatedmay be between approximately 90° F. and approximately 100° F. Forexample, the known temperature may be between approximately 92° F. andapproximately 93° F., and/or within any other useful temperature range.It is understood that one or more heaters (not shown) may be utilized toassist in heating the portion of the temperature probe 10 to this knowntemperature.

In still further exemplary embodiments, one or more additional sensors(not shown) may be disposed on the temperature probe 10 at a locationuseful for detecting the presence of the probe cover 30. For example,such additional sensors may be disposed proximate the base 24 of thehead 18 and configured to detect the proximal end 42 of the probe cover30 once the head 18 has been inserted into the probe cover 30. In stillfurther exemplary embodiments, such sensors 28 may be disposed proximatethe tip 16 and configured to detect the distal end 40 of the probe cover30 once the head 18 has been inserted into the probe cover 30. In suchexemplary embodiments, the one or more additional sensors may comprise,for example, a proximity sensor and/or any other like sensing device,and sensing the temperature indicative of the body cavity temperaturemay be performed in response to detecting the presence of the probecover 30 on the head 18.

Other embodiments of the invention will be apparent to those skilled inthe art from consideration of the specification and practice of theinvention disclosed herein. It is intended that the specification andexamples be considered as exemplary only, with a true scope and spiritof the invention being indicated by the following claims.

What is claimed is:
 1. A temperature measurement system, comprising: atemperature probe including a temperature sensor; a reader; a controllerin communication with the temperature sensor and the reader, and; acontainer housing a plurality of probe covers associated with thetemperature probe, the container including an information featureproviding information related to the plurality of probe covers, thereader configured to read the information and direct a signal to thecontroller indicative of the information.
 2. The system of claim 1,further including a receptacle configured to retain the container andthe temperature probe, the reader being disposed on the receptacle andpositioned to read the information during at least one of insertion ofthe container into the receptacle and removal of the temperature probefrom the receptacle.
 3. The system of claim 1, wherein the reader isdisposed on the temperature probe proximal to the temperature sensor. 4.The system of claim 1, wherein the controller is configured to disablethe temperature sensor in response to the information.
 5. The system ofclaim 1, wherein the information comprises at least one of an averagethickness of the plurality of probe covers, an average transmissivity ofthe plurality of probe covers, and an intended body site for the probecovers.
 6. The system of claim 1, wherein the reader comprises one of anRFID reader, a barcode reader, an MICR reader, a conductance sensor, aresistance sensor, and a magnetic sensor.
 7. The system of claim 1,wherein the information feature comprises one of an RFID tag, a barcode,MICR printing, a conductive strip of material, a resistive strip ofmaterial, and a magnetic strip of material.
 8. The system of claim 1,wherein the container includes an opening providing access to theplurality of probe covers, the plurality of probe covers being stackedwithin the container such that a top-most probe cover is disposedsubstantially within an adjacent probe cover, and wherein the top-mostprobe cover is accessible through the opening for mounting on a portionof the temperature probe.
 9. The system of claim 8, wherein theinformation feature is positioned on a surface of the container suchthat the information feature is disposed within a sensing range of thereader while the portion of the temperature probe passes through theopening.
 10. A method of determining a temperature of a patient,comprising: reading information related to a plurality of probe coversstored within a container with a reader; mounting a probe cover of theplurality of probe covers onto a temperature probe while the probe coveris disposed substantially within the container; measuring a temperatureof the patient with a temperature sensor of the probe; and estimating acore temperature of the patient based on the measured temperature andthe information, wherein the information is read with a reader separatefrom the temperature sensor.
 11. The method of claim 10, whereinmounting the probe cover comprises inserting a portion of thetemperature probe within the probe cover such that the reader remainsexposed outside of the probe cover, the information being read from aninformation feature positioned at a location on the container.
 12. Themethod of claim 10, further comprising disabling the temperature probein response to the information.
 13. The method of claim 10, furthercomprising identifying the container with the reader and recording acumulative number of probe covers used from the container.
 14. Themethod of claim 13, further comprising disabling the temperature probefor subsequent temperature measurements utilizing probe covers from thecontainer in response to the cumulative number meeting a probe covercapacity associated with the container.
 15. The method of claim 10,wherein each probe cover of the plurality of probe covers ischaracterized by a unique value indicative of a physical property of therespective probe cover, the information comprising an average of theunique values.
 16. The method of claim 15, wherein the physical propertycomprises one of a thickness, a transmissivity, and an intended bodysite.
 17. A method of determining a temperature of a patient,comprising: accessing a top-most probe cover of a plurality of probecovers disposed within a container; mounting the top-most probe coveronto a portion of a temperature probe, wherein the mounted top-mostprobe cover overlays a temperature sensor of the temperature probe;reading information indicative of the plurality of probe covers with areader in communication with the temperature probe, wherein theinformation is read from the container; measuring a temperature of thepatient with a temperature sensor of the temperature probe; andestimating a core temperature of the patient based on the measuredtemperature and the information.
 18. The method of claim 17, wherein theinformation is indicative of a lot of probe covers from which theplurality of probe covers was obtained.
 19. The method of claim 17,further comprising identifying the container with the reader andrecording a cumulative number of probe covers used from the container.20. The method of claim 19, further comprising disabling the temperatureprobe for subsequent temperature measurements utilizing probe coversfrom the container in response to the cumulative number meeting a probecover capacity associated with the container.